Rotary pump



A.A. AUST.

ROTARY PUMP. APPLICATION FILED SEPT. 6. 19|?.

Patented Nov. 11, 1919.

2 SHEETS-SHEET 2.

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ARTHUR A. AUST, OF BEDFORD, OHIO.

ROTARY rinvii.

Specieation of Letters Patent. Y Patented NOV. 11, 1919.

Original application filed March 1, 1917, Serial No. 151,661. Divided and this application filed September 6, 1917. Serial No. 189,980.

To all whom t may concern Be it known that I, ARTHUR A. AUST, a citizen of the United States, residing at Bedford, in the county of Cuyahoga and.

pump chamber is provided with a rotatable ring operated by two rotating pistons. The relation between the ring and the pistons is such that power is applied to the end of the piston rods thereby securing maximum efliciency. The ring is tangent to the inner surface of the chamber and always engages the point of tangen'cy. The piston rods are eccentric n relation to the movement of the ring and in rotating presses against the inner surface of the chamber. l is provided with suitable openings for admitting and expelling the water.V

Other details will be pointed out* in the description to follow. My invention is `illustrated in the accompanying drawings, wherein:

Figure 1 is an end sectionalview of the pump mechanism. A

Fig. 2 is a section showing the details of the pump mechanism with the pistons in alinement. n

Fig. 3 is a section on the line 18-18 of Fig. 2. u

Fig. 4 is a detail of one of the pump pistons. Fig. 5 is a detail showing a modified form of piston.

Referring to the drawings, the main shaft 320 carries the collar 310 which is fastened to the rod 312, one end of which is threaded into the collar as shown` in Fig. 4:. YThe opposite end of this rod 312 carries the piston 333 at X, which in rotating presses against the walls and inner circumference of the cylinder or chamber. During this rotation the piston 333 carries with it the movable The chamber ring 321. This ring is provided with the roller bearings 322 which rest upon or engageV the periphery of the flange 336.

y The ring 321 is centered eccentrically in relation to the shaft and is provided with an extension or ring-shaped section 337 through which the rod 312 passes. Within the ring 337 is mounted a rotatable split ring 330. This ring 330 is arranged to rotate in order to take up the variation of the piston 333, which as stated is eccentric in relation to the center of the ring 321.

The `rings 330 and 337 are shouldered downto reduce friction. The opening 331 in the ring 337 through which the rod 312 passes is provided With enough clearance to permit the eccentric movement of the piston 333 and the corresponding movement of the arm 312. As the ring rotates the piston 333 slides back and forth through the close ,fitting opening 332 in the ring 330.

It will be noted that the piston 333 designated as X is mounted upon and keyed to the shaft 320. The other piston 333 instead of being fastened to the shaft is mounted or attached toa rider or idler arranged to turn loosely upon the shaft 320. The idler 340 shown in Fig. 3 is provided with the yokes or rings through which the shaft 320 passes. The ring or bearing to which the pist-on 333 designated as X is mounted lies between the rings 3411 and 342 of the idler. From this arrangement it will be seen that the piston 333 designated as X is operated directly by the shaft 320, while the other piston 333 turns freely upon the shaft. The ring 321, is however, provided with two split rings or collars 330 through which both pistons pass.

`With this arrangement the shaft 320 in rotating carriesv with it the piston 333 at X which causes the ring 321 to rotate. This ring in rotating carries with it the other piston 333 which is loosely mounted upon the shaft. This arrangement is necessary as the center of the ring 321 is eccentric to the center of the shaft upon which the two pistons are mounted. In View of this ec centric relation it is necessary to make allowances for thepistons to assume the positions shown in Fig. 1 when the maximum volume 0f water lies under and between the two pistons.

Referring to Fig. 2, it will be noted that the two pistons are in line and the center of the shaft 320 is directly in line with the 1'8-l8(y In Athis position the chan'iber is tin'g'ency1 the'l'eaf valves shown inv Figs. 2;,

divided'into two equal partsand.thevolumeii Y of water in each part is the same.

In passing from this positionto the'positons?, ,Inr order to take care of thisconf and t are provided. In assuming `the`posi" tion shown in- Fig. 1.-, thevalve 316er the pistonfB-Bto-the rightr otFig. lis, caused to vop'endue to. the tendency of avacuinn to be formedbetween', the two."pistonsandY vthe lowerf'portion, fof .the Chamber.,. The opening Yofthis valve `allows water. to pass intothe space betweenlthe twolpistrls. thns Y automatically comp'eiis'ating,` for; the varia- `tion mpposition of the pistons. Y

1. Figply shows the pistons inftheir'maiim-nmf" eccentricity .asfto alinement. 1 When the lpistons start to passv from, this. position to.; assume thepositin shown. inV FigQZ, the

l werfspace between the pistons gradually decreases 'whereupoi the valve of; the

. piston 333y designatedaslX opens and allows the 'walten' to flow intoV thenp er partition of the chamber.l .-The groove at allows lastet water4 to lescape; through, exhaust port 351.V 'From'Y the foregoing description r-itwill be ie'pistons'assume varying posi! tionsjbutgthe valvesk '3,161 lcompei'is'alte. for the Varying lspace between thepistons. s

' The foregoing description in.'` connection with "the pump ."jshcijwsv thatthe water is drawn in through theintak'e port 350 and their forcedthrougl'i the exhaust port 351. Inforder tofconvert Vthe pump'f to arwater motorfitlis only necessary toforcevvateitiinder pressnre andluse the'` opening l'as an intake and "the opening 350', as AaireXhaiist.

Instead' of reversing `the intakes and; esl. hansts the valves 316 can be reversed andthe opening 3510iisedfas an intakenand tliejopen- 375].v as the exhaust.

` From 'the vYforegoingjit,' will noted, 4that t thel device f, shown in Figs.; 1, 2`and.l 3,' can be iis/ed as;

pump; or as a water motor" atfiwill, or c'nnpiesse'd air. motor-meterfmeasuring pump, y 't 'Y Havingthussdescribed*my invention what i VIrdesirelto -secnrefbyLetters Patent isg':

'torv f l.llnl'a machine; the" smbhati.. 0i Chamber, tvofprotatabl@ rams adapted@ rotatefyvithinsaid chamber, meansfor causf ing saidpistonsto, assume Yllflillgpositions withinsaid chamber duringtheir rotation,

afvalt@ 'fQr each .piStOit Saidve1ve$ Serving* 'ompensate for thevarying positions as,- sumedsaid pistons'. 1

f2.5In .a machine, thecombinationpf'a compartment provided witha rotatable ring and two` .rotatable pistons, said ring being centered eccentrically relation'ftoE said` pistons2 said pistons during their rotation assuming varying positions, each of said pist'onslbeing provided with a valve, said valves serving to compensate for the varying posi- `v`tiOnsasSumed during their rotation. tionrshown in Fig. 1, the volume of Water increases below' andibetweenthe two` pis`AA In a -machine, the combination of a tion of" said pistons, two rotatable collars carried by said ring through ywhich said pistons pass, means for rotating said iingand pistons, said collars serving to compensate for the`l varying positionswhich the pistons assume in relation to said ring,l aval've for each of said pistons,said valves serving to compensate for .thel varyingv positions assumed `by said pistons in relation `to'said Compartment. y

t In. a machine,I the combination ofv a chamber provided with a rotatablering, of two. pistons, forcausing the rotation of said ring, said.A pistons. during their rotation being arranged to assume Varying positions in relationto.v one, another, each of said,l pistons being provided with a valve, an intake and an "exhaust portv for said. chamber, means controlled by saidpistons during their rotation fordrawing ina volume of material through said intake port and forcing the material through said exhaust port, said Valve serving,tofcompensate for the varying positionassumed'by said. pistons during their rotation. l 2

5.7111-, amachine, the ycombination of a chamber providedwith a rotatable ring,I of two pistonsljfor `causing rotation of said ring, said pistons. andl ring serving to divide the4 chamberV into two })ortionsy said pistons during; their rotation serving to vary the area of thetwo portions in relationto one anotheigmeans.controlledby said pistons for drawing ina volume offmaterial intoeach j of, said portions, a valve associated with each ofl said pistons, means controlledby said valves `fork compensatingl for the varying amounts of material heldin said portions durinlg the, rotation of said pistons.,

' 6 flla machine, lthe;l combination of a chamber, a plurality of rotatable pistons adaptedto, rotate within said chamber, said pistons serving'to divide the chamber into separate portions, said pistons during' their rotation serving to vary the area of the'portions ing'relationA to one another, means' associated with each of said pistons for compensating for the varying area of 4said poriio in relation to one another, means controlled by said pistons for drawing in a Volume of material into each or' said portions, means associated with each of said pistons for coinpensating for the Varying amounts of material held in said portions during the rotation of said pistons.

S. In a machineJ the combination of a chamber provided with a rotatable ring, a plurality of pistons rotatable with said ring, said pistons during their rotation being arranged to assume varying positions in relation to one another, an intake and exhaust port for said chamber, means controlled by said pistons during their rotation for drawing in a volume of material through said intake port and forcing the material through said exhaust port, .means associated with each of said pistons to compensate for the varying amount of material between said pistons during their rotation.

9. In a machine, the combination of a chamber, a plurality of rotatable pistons within said chamber, said pistons serving to divide the chamber into separate portions, said pistons .during their rotation serving to vary the area of the portions of the chamber in relation to one another, means controlled by said pistons Jfor drawing in a Volume of material into each of said portions, means associated with each of said pistons for allowing the intermixing of material in said portions to compensate for the varying positions of the pistons during their rotation. In testimony whereof I aix lily-signature.

ARTHUR A. AUST.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. C. 

